It seems like they've been going back and forth for a while... Around the time of the AthlonXP was when AMD started giving Intel serious competition... they weren't quite as fast but they were a third of the price. I still have my AXP 2500+ Barton core in my garage computer...fantastic chip. Then when Intel released the Prescott and AMD released the Athlon64...everything for intel went downhill. They were charging four times as much for inferior chips. They were slower and less stable than their AMD counterparts. However, with the Intel Core 2 Duo processors, they came back on top...I don't even remember what AMD called their processors at the time as they were not worth more than 5 minutes of research. I'm still using my Core2duo system so I can't say from personal experience about the future, but I have heard a LOT of good things about AMD's Phenom processors. My biggest complaint about the Socket 775 intel chips is that they aren't as "quick" as the old Athlon64 chips. In gaming and any CPU intensive task my Intel core 2 blows my old A64 system away but for every day use, web browsing, chatting and all that crap it felt like my A64 was just snappier about it, I believe this was due to the A64 having an on-chip memory controller which Intel still has not adopted. However I've heard that Intel has implemented this in their new I7 standard. So I'm interested to see how that works out for them. As far as stability they are both VERY high quality chips and the only crashes I've ever had with either was from bad software or me trying to overclock them just a little too high